More than 4,000 Phoenix Open fans failed voluntary Breathalyzer test

Nearly 10,000 people tested their blood-alcohol content for Scottsdale police at the golf tournament.

A man chugs a beer as the gallery including a Big Bird cheers him at the 16th hole during round three at TPC Scottsdale on Feb. 4, 2017 at Waste Management Phoenix Open in Scottsdale, Ariz.(Photo: Rob Schumacher/azcentral sports)

Police offered the voluntary Breathalyzer testing, termed "Know Your Limits,'' at the Phoenix Open to give people information that would help them decide whether they should be driving, police said in a news release.

The tournament set another attendance record, with 655,434 attending the weeklong event, including nearly 205,000 on Saturday alone, a new record for the third round of the tournament. More than 1,900 people blew over 0.08 percent Saturday alone, police said.